16 books in series

50 Ideas You Really Need to Know

50 Ideas You Really Need to Know is a 16-book series first released in 2007 with contributions by Joanne Baker, Edmund Conway, and 7 others.

50 Economics Ideas You Really Need to Know

2009 • 4 Readers • 208 pages

50 Physics Ideas You Really Need to Know

2007 • 4 Readers • 316 pages